/*
 * Tencent is pleased to support the open source community by making BK-JOB蓝鲸智云作业平台 available.
 *
 * Copyright (C) 2021 THL A29 Limited, a Tencent company.  All rights reserved.
 *
 * BK-JOB蓝鲸智云作业平台 is licensed under the MIT License.
 *
 * License for BK-JOB蓝鲸智云作业平台:
 * --------------------------------------------------------------------
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
 * documentation files (the "Software"), to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
 * to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of
 * the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
 * THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */

package com.tencent.bk.job.manage;

import com.tencent.bk.job.common.service.AppScopeMappingService;
import com.tencent.bk.job.common.util.ApplicationContextRegister;
import lombok.extern.slf4j.Slf4j;

@Slf4j
public class GlobalAppScopeMappingService {
    private static volatile AppScopeMappingService globalAppScopeMappingService;

    private static final Object lock = new Object();

    private GlobalAppScopeMappingService() {

    }

    public static AppScopeMappingService get() {
        AppScopeMappingService service = globalAppScopeMappingService;
        if (service == null) {
            synchronized (lock) {
                service = globalAppScopeMappingService;
                if (service == null) {
                    service =
                        ApplicationContextRegister.getBean(AppScopeMappingService.class);
                }
            }
        }
        return service;
    }

    public static void register(AppScopeMappingService appScopeMappingService) {
        synchronized (lock) {
            if (globalAppScopeMappingService != null) {
                log.info("AppScopeMappingService is already register");
                return;
            }
            globalAppScopeMappingService = appScopeMappingService;
        }
    }
}
